<template>
  <el-dialog
    title="新增员工"
    :visible="showDialog"
    top="8vh"
    @close="handleClose"
    @click.native="handleDialogClick"
  >
    <!-- 表单 -->
    <el-form ref="addForm" :model="formData" :rules="rules" label-width="120px">
      <el-form-item label="姓名" prop="username">
        <el-input v-model="formData.username" style="width:50%" placeholder="请输入姓名" />
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
        <el-input v-model="formData.mobile" style="width:50%" placeholder="请输入手机号" />
      </el-form-item>
      <el-form-item label="入职时间" prop="timeOfEntry">
        <el-date-picker v-model="formData.timeOfEntry" style="width:50%" placeholder="请选择入职时间" />
      </el-form-item>
      <el-form-item label="聘用形式" prop="formOfEmployment">
        <el-select v-model="formData.formOfEmployment" style="width:50%" placeholder="请选择">
          <el-option
            v-for="item in hireType"
            :key="item.id"
            :label="item.value"
            :value="item.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="工号" prop="workNumber">
        <el-input v-model="formData.workNumber" style="width:50%" placeholder="请输入工号" />
      </el-form-item>
      <el-form-item label="部门" prop="departmentName">
        <!--
           v-model: 语法糖  默认是 :value + @input的结合
         -->
        <el-input
          :value="formData.departmentName"
          style="width:50%"
          placeholder="请选择部门"
          @click.native.stop="handleClick"
        />
        <!-- 树组件 -->
        <div
          v-if="isShowTree"
          class="tree-box"
        >
          <!-- 滚动条组件 -->
          <el-scrollbar>
            <el-tree
              v-loading="treeLoading"
              :data="treeData"
              :props="{label: 'name'}"
              @node-click="handleNodeClick"
            />
          </el-scrollbar>
        </div>
      </el-form-item>
      <el-form-item label="转正时间" prop="correctionTime">
        <el-date-picker v-model="formData.correctionTime" style="width:50%" placeholder="请选择转正时间" />
      </el-form-item>
    </el-form>
    <!-- footer插槽 -->
    <template #footer>
      <el-button @click="handleClose">取消</el-button>
      <el-button type="primary" @click="handleSubmit">确定</el-button>
    </template>
  </el-dialog>
</template>

<script>
// 引入接口函数
import { reqGetDepartments } from '@/api/department'
import { reqAddEmployee } from '@/api/employees'
// 引入工具函数
import { tranListToTreeData } from '@/utils'
// 引入枚举对象
import employeeConstant from '@/constant/employees'
const { hireType } = employeeConstant

export default {
  name: 'AddEmployee',
  props: {
    // 1. 由外部控制对话框的显示和隐藏
    showDialog: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      // 1. 表单数据对象
      formData: {
        username: '', // 用户名
        mobile: '', // 手机号
        formOfEmployment: '', // 聘用形式
        workNumber: '', // 工号
        departmentName: '', // 部门
        timeOfEntry: '', // 入职时间
        correctionTime: '' // 转正时间
      },
      // 2. 表单校验规则对象
      rules: {
        username: [
          { required: true, message: '用户姓名不能为空', trigger: ['blur', 'change'] },
          { min: 1, max: 4, message: '用户姓名为1-4位', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '手机号不能为空', trigger: ['blur', 'change'] },
          { pattern: /^1[3-9]\d{9}$/, message: '手机号格式不正确', trigger: ['blur', 'change'] }
        ],
        formOfEmployment: [
          { required: true, message: '聘用形式不能为空', trigger: ['blur', 'change'] }
        ],
        workNumber: [
          { required: true, message: '工号不能为空', trigger: ['blur', 'change'] }
        ],
        departmentName: [
          { required: true, message: '部门不能为空', trigger: ['blur', 'change'] }
        ],
        timeOfEntry: [
          { required: true, message: '请选择入职时间', trigger: ['blur', 'change'] }
        ]
      },
      // 3. 存储树组件的树形数组
      treeData: [],
      // 4. 控制树组件的显示和隐藏
      isShowTree: false,
      // 5. 树组件加载是否加载数据
      treeLoading: false,
      // 6. 聘用类型
      hireType
    }
  },
  methods: {
    // 1. 点击关闭对话框
    handleClose() {
      // 1.1 按照固定的语法修改showDialog的属性值
      this.$emit('update:showDialog', false)
      // 1.2 重置表单数据  和 校验结果
      this.$refs.addForm.resetFields()
    },
    // 2. 选择部门输入框获得焦点触发
    async handleClick() {
      // 2.0 让树组件展示或隐藏
      this.isShowTree = !this.isShowTree
      // 2.1 优化操作: 判断(如果树组件处于隐藏状态, 那么后边的代码就没有必要执行)
      if (!this.isShowTree) return
      // 2.2 展示加载圈
      this.treeLoading = true
      // 2.3 调用接口获取部门数据
      const { data: { depts }} = await reqGetDepartments()
      // 2.4 把对象数组转成树形数组并存储
      this.treeData = tranListToTreeData(depts, '')
      // 2.5 隐藏加载圈
      this.treeLoading = false
    },
    // 3. 对话框触发点击(冒泡触发)
    handleDialogClick() {
      // 3.1 让树形组件隐藏
      this.isShowTree = false
    },
    // 4. 点击树组件上的节点
    handleNodeClick(data) {
      // console.log(data)
      // 4.1 判断是否是叶子节点(没有子部门), 如果不是, 不做任何操作
      // chidren: []
      if (data.children && data.children.length > 0) return
      // 4.2 是叶子节点(数据回显)
      this.formData.departmentName = data.name
      // 4.3 隐藏树形组件
      this.isShowTree = false
    },
    // 5. 点击添加员工
    handleSubmit() {
      // console.log(this.$parent, '------')
      // 5.1 整个表单校验
      this.$refs.addForm.validate(async(flag) => {
        if (!flag) return
        // 5.2 调用添加接口
        await reqAddEmployee(this.formData)
        // 5.3 提示用户
        this.$message.success('新增员工成功~')
        // 5.4 关闭对话框
        this.handleClose()
        // 5.5 通知父组件重新拉取数据
        this.$emit('addUser')
        // 可以但不推荐
        // this.$parent.getUserList()
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.tree-box {
  position: absolute;
  width: 50%;
  // min-height: 50px;
  // max-height: 250px;
  height: 250px;
  left: 0;
  top: 45px;
  z-index: 100;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding-right: 5px;
  // overflow: auto;
  background-color: #fff;

  ::v-deep {
    .el-tree-node__content {
      height: auto;
    }
    .el-scrollbar{height: 100%;}
    .el-scrollbar__wrap{
      overflow-x:hidden;
    }
  }
}
</style>

